Spring seat



' H. E. GYNN.

SPRING SEAT.

APPLICATION men ocr. 26, 1920,

Patgntd June 6,1922.

V v i A W m Mia-rm.

of the adjacent end of said spring in relation to said plate.

Centrally of each side spring 22 is a substantially vertical guide-member 27, and therefore two guide-members 27 are spaced circumferentially of the space between the central portions of the plates 7 and 8. Each guide-member 27 is secured at its upper end in any approved manner (see Fig. 2) to the upper plate 8. The guidemembers 27 extend from the upper plate 8 downwardly to and through and below the lower plate 7 and are depressible with the upper plate independently of' the lower plate and against the action of the springs 20, 21 and 22. The lower. plate 7 is provided at each guidemember 27 (see Fig. 4:) with a substantially vertical tubular member 28 formed at the inner face of and on said plate and surrounding said guide-member and forming an upwardly projecting annular flange which is concentric in relation to said guide-member and provided internally with adownwardly facing annular shoulder 29, and anti-frictionballs 30 are arranged under'and overlapped by said shoulder and supported from the lower plate as will hereinafter appear and afford lateral bearing to said guidemember.

The lower plate 7 is provided at each guide-member 27 (see Fig. 1) with a downwardly projecting annular flange 31 surrounding a barrel 32 which consists prefer ably of a substantially vertical tubular member made of steel and surrounding said guide-member, and said tubular member or barrel extends into the lower plate from below and is tightly fittedinto and rigid with but removable downwardly by force from said plate. Said barrel is provided externally, below the adjacent flange 31, with an upwardly facing annular shoulder 33 which abuts against the lower'end of said flange and prevents said barrel from being driven too far upwardly during the assemblage of the parts. Each lower flange 31 of the lower plate 7 is arranged in line vertically with the adjacent upper flange 28 of said plate, and the barrel 32 surrounded by said flange is spaced at its upper. end downwardly from the shoulder 2910f said upper flange, and the adjacent anti-friction balls 30 are seated on said end of said barrel and consequently supported from said plate. Each barrel 32 is provided internally and below the adjacent flange 31 with an annular recess 35, and anti-friction balls 36 engage said recess and afford-lateral bearing to the adjacent guide-member27. Each upper flange 28 and the adjacent barrel 32 are large enough in internal diameter to be out of contact with the adj acent' guidemember 27.

Each guide-member 27 is provided below the adjacent barrel 32 with a pin 37 which in internal diameter enough more than the diameter of the adjacent guide-member 27 to effect the formation, between the two sets of anti-friction balls 30 and 136,013 an annular chamber 38 for holding greaseto be supplied to said chamber to insure. adequate lubrication of said balls. Preferably each plate-has its portions through which the guide-members 27 extend, projecting laterally and outwardly, as at 39, as shown in Fig. 3,. and it will be observed that each plate, by the extension of its ribs 10 and 11' respectively behind and in front-of the side springs 22 so that said ribs extend the one at the back of and the other in front of the guide-members 27, is rendered strong enough, without unduly increasing its weight, to successfully withstand strains to which it may be subjected by a tendency of the upper plate to shift horizontally independently of the lower plate.

What I claim is- 1. In a spring-seat. two vertically spaced and substantially horizontal opposite plates, springs supporting the upper plate from the lower plate, andtwo substantially vertical guide-members spaced, cireumferentially of the space between the central portions of the plates and extending from the upper plate to and through the lower plate and depressible with the upperv plate independently of the lower plate, the lower plate being provided at each guide-member with a substantially vertical tubular member whichis formed atthe inner face of and on the lower plate and forms an upwardlyprojecting annular flange which surrounds said guidemember andisprovided internally with a downwardly facing annular shoulder, and anti-frictionballs internally of said flang forming member, said balls affording lateral bearing to said guide-member and arranged under and overlapped by said shoulder.

2. In a spring-seat, the combination, with two vertically spaced and substantially" horizontal opposite plates, springs supporting the upper plate from the lower plate,v and two substantially vertical guide-members spaced circumferentiallyof the space between the central portions of theplates and of the lower plate, the lower plate being provided at each guide-memberwith anupwardly projecting member which surrounds said guide-member and is provided internally with a downwardly facing annular shoulder, of a barrel which surrounds said guide-member and extends into the lower plate from below and is rigid with said lower plate and spaced downwardlyfrom said shoulder, and anti-friction balls seated on the upper end of said barrel and overlapped by the aforesaid shoulder and affording lateral bearing to said guide-member.

3. In a spring-seat, the combination, with two vertically spaced and substantially horizontal opposite plates, springs supporting the upper plate from the lower plate, and

two substantially vertical guide-members spaced circumferentially of the space between the central portions of the plates and extending downwardly from the upper plate to and through and below the-lower plate and depressible with the upper plate independently of the lower plate, the lower plate being provided at each guide-member with a downwardly projecting annular flange extending circumferentially of said guide-member, of a barrel which surroundssaid guide-member and extends into the lower plate from below and is rigid with said lower plate and provided externally below said flange with an annular shoulder which abuts-against the lower end of said flange and also provided internally with an annular recess, said guide-member being provided below saidrbarrel with a member abutting against the lower endof the barrel, and anti-friction balls engaging said recess and affording member. g l

4. In a spring-seat, the combination, with two verticallyspaced and substantially hor izontal opposite plates, springs supporting the upper plate from the lower plate, and g I lateral bearing to said guide- 'i two substantially vertical guide-members spaced circumferentiall'y of the spacebetween the central portionsof the, plates and extending .through and below the lower plate and depressible with the upper plate independently of the lower plate, the lower platebeing provided at each guide-member,

with a downwardly projecting annular flangeand an upwardly projecting annular flange which are in line vertically and surround said guidemeinber, the last-mentioned flange being provided internally'with a downwardly facing annular-shoulder, of

ber and extends. into the lower plate from a barrel which surrounds said guide-mem below and isyrigid with said lower plate and spaced downwardly from said shoulder and provided internally below said lower flange with an annular recess, anti-frictionballs ing spec1ficat1on this 21st day of' October, 1920. i

HATTIE E. GYNN. 

